Endovascular treatment of thoracic aortic diseases: Combined experience from the EUROSTAR and United Kingdom Thoracic Endograft registries

Interventions in Acute or Subacute Phase for Type B Aortic Dissection

The treatment strategy for acute and subacute Stanford type B aortic dissection has changed significantly since the advent of thoracic endovascular aortic repair (TEVAR). Indication for invasive treatment: In addition to the conventional complicated cases (rupture or malperfusion case), the indication for invasive treatment now includes cases with refractory hypertension, persistent or recurrent pain, large aortic diameter, and other conditions that are considered to have a poor prognosis with conservative treatment. Treatment methods: TEVAR is the first choice for acute, subacute, and early chronic-stage treatment, and when this is not possible, other techniques (fenestration and graft replacement) are chosen. Treatment timing: The timing of invasive treatment should be emergent in life-threatening conditions (for rupture or malperfusion case) and immediate in symptomatic cases, while in other cases, preemptive TEVAR is considered appropriate on a scheduled timing within 6 months of onset. (This is a translation of Jpn J Vasc Surg 2023; 32: 157-163.).

Endovascular treatment for life-threatening hemoptysis due to rupture of descending thoracic aortic aneurysm: A case series

INTRODUCTION AND IMPORTANCE

Aortic aneurysm is an uncommon but life-threatening cause of hemoptysis. Treatments include surgery and/or endovascular intervention, each with its own advantages and disadvantages. Endovascular intervention is associated with good early and medium-term outcomes.

CASE PRESENTATIONS

We report three cases of hemoptysis due to ruptured thoracic aortic aneurysm who underwent endovascular intervention. In all three cases, endovascular grafts were placed in the descending thoracic aorta, the number of grafts used was 1, the average time to stop hemoptysis was 4 to 5 days, and the length of hospital stay was between 6 and 8 days. No intravascular fistula, renal failure, prolonged mechanical ventilation and other major cardiovascular events were reported.

CLINICAL DISCUSSION

Endovascular treatment for descending TAA has been demonstrated to be safe and effective, particularly in emergencies in which patients presented with life-threatening hemoptysis, due to its rapid access to the aorta. In our experience at a tertiary hospital in southern Vietnam, the procedural time for a thoracic endovascular aortic repair is relatively brief and can last between 15 and 30 min. Thus, endovascular treatment for ruptured TAA can substantially improve patient prognosis, reduce mortality and complications.

CONCLUSION

The implementation of endovascular intervention can help improve prognosis, reduce mortality and complications in patients with hemoptysis due to ruptured thoracic aortic aneurysm.

Gore TAG thoracic branch endograft for treatment of a subacute type B aortic dissection complicated by rupture

An 80-year-old man presented with a subacute zone 3-5 type B aortic dissection complicated by rupture and visceral and lower extremity malperfusion. He underwent emergent zone 2 repair with a Gore TAG thoracic branch endograft with inclusion of the left subclavian artery for a dominant left vertebral artery. The patient's postoperative course was uncomplicated. Type B aortic dissections can be anatomically complex, and rupture is a rare complication in the subacute phase. We report the novel use of a Gore TAG thoracic branch endograft for the management of type B aortic dissection complicated by rupture and demonstrate its feasibility for patients with type B aortic dissection complicated by rupture.

Efficacy of left subclavian artery revascularization strategies during thoracic endovascular aortic repair in patients with type B dissection: A single-center experience of 105 patients

Background

Left subclavian artery (LSA) revascularization during thoracic endovascular aortic repair (TEVAR) is necessary to reduce postoperative complications in patients with Stanford type B aortic dissection and an insufficient proximal anchoring area. However, the efficacy and safety of different LSA revascularization strategies remain unclear. Here, we compared these strategies to provide a clinical basis for selecting an appropriate LSA revascularization method.

Methods

In this study, we included 105 patients with type B aortic dissection who were treated using TEVAR combined with LSA reconstruction in the Second Hospital of Lanzhou University from March 2013 to 2020. They were divided into four groups according to the method used for LSA reconstruction, namely, carotid subclavian bypass (CSB; n = 41), chimney graft (CG; n = 29), single-branched stent graft (SBSG; n = 21), and physician-made fenestration (PMF; n = 14) groups. Finally, we collected and analyzed the baseline, perioperative, operative, postoperative, and follow-up data of the patients.

Results

The treatment success rate was 100% in all the groups, and CSB + TEVAR was the most commonly used procedure in emergency settings compared with the other three procedures (P < 0.05). The estimated blood loss, contrast agent volume, fluoroscopic time, operation time, and limb ischemia symptoms during the follow-up were significantly different in the four groups (P < 0.05). Pairwise comparison among groups indicated that the estimated blood loss and operation time in the CSB group were the highest (adjusted P < 0.0083; P < 0.05). The contrast agent volume and fluoroscopy duration were the highest in the SBSG groups, followed by PMF, CG, and CSB groups. The incidence of limb ischemia symptoms was the highest in the PMF group (28.6%) during the follow-up. The incidence of complications (except limb ischemia symptoms) during the perioperative and follow-up periods was similar among the four groups (P > 0.05) The median follow-up time of CSB, CG, SBSG, and PMF groups was significantly different (P < 0.05), and the CSB group had the longest follow-up.

Conclusion

Our single-center experience suggested that the PMF technique increased the risk of limb ischemia symptoms. The other three strategies effectively and safely restored LSA perfusion in patients with type B aortic dissection and had comparable complications. Overall, different LSA revascularization techniques have their advantages and disadvantages.

Clinical Characteristics and Risk Factors of Noninfectious Fever after Thoracic Endovascular Aortic Repair of Acute Type B Aortic Dissection

BACKGROUND

Thoracic endovascular aortic repair (TEVAR) is gradually becoming a first-line treatment of complicated acute type B aortic dissection (ATBAD). Interestingly, according to years of experience in the treatment of ATBAD, we found that patients with ATBAD often had unexplained noninfectious fever after TEVAR. This study aims to explore its clinical characteristics and independent risk factors.

METHODS

From January 2016 to September 2021, 211 consecutive patients treated electively by TEVAR for ATBAD were included. The entry tears in all patients originated in the distal to the left subclavian artery (LSA). All patients were diagnosed with ATBAD for the first time. The definition of fever in this study was that the body temperature of patients after TEVAR exceeds 38°C.

RESULTS

A total of 211 patients (53.62 ± 11.34 years, 81% men) were included in the analysis. To compare patients who did and did not have post-TEVAR fever, they were respectively classified as the fever group and the nonfever group. Fever was diagnosed in 115 (55%) patients. Preoperatively, statistical differences were recorded in age (P = 0.023) and red blood cell (P = 0.037). Age <60 years [odds ratio (OR) 2.194, 95% confidence interval (CI) 1.147-4.196, P = 0.018] and duration of the operation >3 hr (OR 3.586, 95% CI 1.133-11.350, P = 0.03) were positively associated with fever. In the comparison of preoperative and postoperative experimental data, the changes in white blood cell (P = 0.046) and platelet (P = 0.007) of the 2 groups were significantly different. Hospital stay (P = 0.009) and postoperative hospital stay (P < 0.001) in the fever group were significantly prolonged. There was no difference in survival in the mid- and long-term follow-up between the 2 groups.

CONCLUSIONS

Noninfectious fever occurs in more than half of the patients after TEVAR (115/211, 54.5%). Patients in the fever group are younger. Age <60 years and duration of the operation >3 hr are independent risk factors for noninfectious fever in patients with ATBAD after TEVAR fever. Noninfectious fever after TEVAR may lead to prolonged hospital stay. However, it did not affect mid- and long-term prognosis.

Association of Thoracic Aortic Aneurysm Versus Aortic Dissection on Outcomes After Thoracic Endovascular Aortic Repair

Background Because thoracic endovascular aortic repair (TEVAR) has become the standard of care for complicated type B aortic dissection (TBAD) and descending thoracic aortic (DTA) aneurysm, it is important to understand outcomes and use of TEVAR across thoracic aortic pathologies. Methods and Results This was an observational study of patients with TBAD or DTA undergoing TEVAR from 2010 to 2018, using the Nationwide Readmissions Database. In-hospital mortality, postoperative complications, admission costs, and 30- and 90-day readmissions were compared between the groups. Mixed model logistic regression was used to identify variables associated with mortality. An estimated total of 12 824 patients underwent TEVAR nationally, of which 6043 had an indication of TBAD and 6781 of DTA. Patients with aneurysms were more likely to be older, women, have cardiovascular disease, and have chronic pulmonary disease compared with patients with TBAD. Weighted in-hospital mortality was higher for TBAD (8% [1054/12 711] versus 3% [433/14 407], P<0.001), compared with DTA, as were all postoperative complications. Patients with TBAD had a higher cost of care during their index admission (57.3 versus 38.8 × $1000, P<0.001), compared with DTA. The 30-day and 90-day weighted readmissions were more frequent for the TBAD group compared with DTA (20% [1867/12 711] and 30% [2924/12 711] versus 15% [1603/14 407] and 25% [2695/14 407], respectively, P<0.001). On multivariable adjustment, TBAD was independently associated with mortality (odds ratio, 2.06 [95% CI, 1.68-2.52]; P<0.001). Conclusions After TEVAR, patients who presented with TBAD had higher rates of postoperative complications, in-hospital mortality, and cost compared with DTA. The incidence of early readmission was substantial for patients undergoing TEVAR, faring worse for those undergoing TEVAR for TBAD as compared with DTA.

Favorable neurological outcomes in thoracic endovascular aortic repair with RELAY™ branched-An international perspective

BACKGROUND

While open surgical repair continues to be the mainstay option for aortic arch reconstruction, the associated mortality, morbidity, and high turn-down rates have led to a need for the development of minimally invasive options for aortic arch repair. Though RELAY™ Branched (Terumo Aortic, Inchinnan, UK) represents a promising option for complex endovascular aortic arch repair, neurological complications remain a pertinent risk. Herein we seek to present multicenter data from Europe documenting the neurological outcomes associated with RELAY™ Branched.

METHODS

Prospective data collected between January 2019 and January 2022 associated with patients treated with RELAY™ single-, double-, and triple-branched endoprostheses from centers across Europe was retrospectively analyzed with descriptive and distributive analysis. Follow-up data from 30 days and 6, 12, and 24 months postoperatively were included. Patient follow-up was evaluated for the onset of disabling stroke (DS) and non-disabling stroke (NDS).

RESULTS

Technical success was achieved in 147 (99.3%) cases. Over 24 months period, in total, six (4.1%) patients suffered DS, and eight (5.4%) patients suffered NDS after undergoing aortic arch repair with RELAY™. All patients that developed postoperative DS had been treated with the double-branched RELAY™ endoprosthesis.

DISCUSSION

The data presented herein demonstrates that RELAY™ Branched is associated with favorable neurological outcomes and excellent technical success rates. Key design features of the endoprosthesis and good perioperative management can contribute greatly to mitigating neurological complications following endovascular aortic arch repair.

Spinal cord ischemia following simultaneous EVAR and TEVAR for concomitant thoracic and abdominal aortic aneurysms

OBJECTIVES

In patients with abdominal aortic aneurysms, 10-20% have concomitant thoracic aortic pathologies. These are typically managed with staged endovascular aneurysm repair (EVAR) and thoracic endovascular aortic repair (TEVAR) due to a perceived higher risk of spinal cord ischemia from a simultaneous intervention. We aimed to determine the outcomes of patients undergoing simultaneous EVAR and TEVAR for concomitant aneurysms.

METHODS

A retrospective cohort study was performed using the Vascular Quality Initiative registry from December 2003 to January 2021. Patients undergoing same-day EVAR and TEVAR were included and analyzed in accordance with the Society for Vascular Surgery reporting standards. Primary outcomes were technical success and spinal cord ischemia.

RESULTS

Simultaneous EVAR and TEVAR was performed in 25 patients. Median age was 75.0 (IQR 63.0-79.0) years and 20 (80.0%) patients were male. Two (4.0%) patients were symptomatic and four (16.0%) presented with rupture. Median maximum infrarenal and thoracic aortic diameter was 57.0 (IQR 52.0-65.0). Infrarenal aortic neck length was 15.0mm (IQR 10.0-25.0), and diameter was 27.0mm (IQR 24.5-30.0). Median procedure time was 185.0 minutes (IQR, 117.8-251.3), fluoroscopy time 32.7 minutes (IQR, 21.8-63.1), and contrast volume 165 ml (IQR 115.0-207.0). There were three (12.0%) Type Ia endoleaks and three (12.0%) Type II endoleaks in EVAR's, with one (4.0%) Type Ia and one (4.0%) Type II endoleak in TEVARs. In-hospital mortality occurred in three (12.0%) patients (one elective, two ruptures). Spinal cord ischemia occurred in one (4.0%) patient. This patient had a symptomatic aneurysm. Thoracic coverage extended from Zone 4 to Zone 5 and an emergent spinal drain was placed postoperatively. Symptoms were present on discharge. There was one (4.0%) conversion to open repair which occurred in a ruptured aneurysm. Technical success was achieved in 19 (76.0%) patients, however when excluding ruptured aneurysms, was achieved in 17 (81.0%) patients. Follow-up data was available for 19 (76.0%) patients at a median of 426.0 (IQR 329.0-592.5) days postoperatively. A total of 3 (12.0%) patients died during the late mortality period, at a mean of 509.0 (±503.7) days. Median change in abdominal and thoracic aortic sac diameter was -1.35mm (IQR -11.5-2.5) and 8.0 (IQR -10.5-12.0) respectively.

CONCLUSIONS

Simultaneous EVAR and TEVAR for concomitant abdominal and thoracic aortic aneurysms can be performed with low rates of spinal cord ischemia. Short- and mid-term outcomes are acceptable.

Impact of Female Sex on Outcomes of Patients Undergoing Thoracic Endovascular Aortic Aneurysm Repair: A Ten-Year Retrospective Nationwide Study in France

The impact of sex on the outcomes of patients with cardiovascular disease is still incompletely understood. The aim of this nationwide multicenter observational study was to investigate the impact of sex on post-operative outcomes in patients undergoing thoracic endovascular aortic repair (TEVAR) for intact thoracic aortic aneurysm (iTAA). The French National Health Insurance Information System was searched to identify these patients over a ten-year retrospective period. Post-operative outcomes, 30-day and overall mortality were recorded. Among the 7383 patients included (5521 men and 1862 women), females were significantly older than males (66.8 vs. 64.8 years, p < 0.001). They were less frequently diagnosed with cardiovascular comorbidities. Post-operatively, women had less frequently respiratory (10.9 vs. 13.7%, p = 0.002) as well as cardiac complications (34.3 vs. 37.3%, p = 0.023), but they had more frequently arterial complications (52.8 vs. 49.8%, p = 0.024). There was no significant difference on overall mortality for a mean follow-up of 2.2 years (26.9 vs. 27.6%, p = 0.58). In the multivariable regression model, female sex was not associated with 30-day or overall mortality. Although women had a favorable comorbidity profile, the short-term and long-term survival was similar. The significantly higher rate of arterial complications suggests that women may be at higher risk of access-vessel-related complications.

A Comparison of Clinical Outcomes of Endovascular Repair Versus Open Surgery for Ruptured Descending Thoracic Aorta

OBJECTIVE

The comparisons between thoracic endovascular aortic repair for ruptured thoracic aorta (TEVAR) and open surgery (OS) have not been well documented, although both procedures have been widely utilized. We performed a systematic review and meta-analysis to investigate the effectiveness and safety between TEVAR and OS in the repair of ruptured descending thoracic aorta.

METHODS

PubMed, Embase, and Cochrane Library databases were searched to find relevant studies to assess TEVAR and OS outcomes. The comparative parameters were perioperative mortality (30 day/in-hospital), 1 year mortality, paraplegia or paraparesis, renal insufficiency, stroke, pulmonary embolism, re-intervention rate, pulmonary complications, and cardiac complications. A fixed-effects model was applied to calculate the odds ratio (OR) with a 95% confidence interval (CI) on pooled outcomes from different studies.

RESULTS

Eighteen observational trials involving 2088 patients were evaluated (TEVAR=560; OS=1528). Meta-analysis showed that TEVAR in repairing the ruptured descending thoracic aorta was associated with lower perioperative mortality (OR=0.47; 95% CI: 0.34-0.66; p<0.01), 1 year mortality (OR=0.46; 95% CI: 0.29-0.75; p<0.01), renal insufficiency incidence (OR=0.56; 95% CI: 0.33-0.93; p=0.03), and pulmonary complications (OR=0.69; 95% CI: 0.52-0.92; p=0.01) when compared with OS. There was no significant difference between TEVAR and OS in terms of paraplegia, stroke, pulmonary embolism, cardiac complications, and early re-intervention rates. However, the late re-intervention rate was higher in the TEVAR group than that in the OS group.

CONCLUSIONS

When repairing the ruptured descending thoracic aorta, TEVAR may be performed rapidly and safely. TEVAR is associated with lower rates of perioperative morbidity and early postoperative complications than OS.

Identifying risk factors for early neurological outcomes following thoracic endovascular aortic repair using the SUMMIT database

OBJECTIVES

The aim of this study was to assess risk factors for early neurological complications following thoracic endovascular aortic repair (TEVAR) for multiple thoracic aortic diseases using an aggregated dataset.

METHODS

The Study to Assess Outcomes After Endovascular Repair for Multiple Throacic Aortic Disease dataset included data from 6 studies evaluating Zenith thoracic endografts. Post hoc analysis identified early (30-day) neurological complications by TEVAR indication and corresponding risk factors.

RESULTS

The study included 594 TEVAR patients (67% male; mean age 66 ± 15 years) with thoracic aortic aneurysm (n = 329), ulcer (n = 56), acute (n = 126) or non-acute (n = 33) type B aortic dissection (TBAD) or blunt injury (n = 50). Overall early stroke rate was 3.5% (n = 21). Overall early paraplegia and paraparesis rates were 1.3% (n = 8) and 2.5% (n = 15), respectively. Multivariable analysis identified acute TBAD [versus others, odds ratio (OR) = 3.47, 95% confidence internal (CI): 1.41-8.52) and longer procedural time (OR = 1.33, CI: 1.02-1.73) as early stroke risk factors. Risk factors for paraplegia or paraparesis included more endografts deployed (OR = 2.43, CI: 1.30-4.55), older age (OR = 1.05, CI: 1.01-1.10) and higher preoperative serum creatinine (OR = 1.31, CI: 1.05-1.64). Endografts landing proximal to the left subclavian artery (LSA) increased stroke rate (versus distal to the LSA; 6.8% vs 2.3%, P = 0.014). Intraoperative LSA revascularization was performed in 20.9% of patients with endografts proximal to the LSA; revascularization did not significantly alter stroke rate (8.1% with revascularization vs 6.4% without, P = 0.72).

CONCLUSIONS

Acute TBAD and prolonged procedure time increased early stroke risk, while more endografts placed, age and preoperative renal impairment increased early paraplegia or paraparesis risk. For acute TBAD, endograft placement proximal to the LSA, but not LSA patency, increased stroke risk.

Clinical features and outcomes after endovascular therapy for penetrating aortic ulcer and intramural hematoma

OBJECTIVES

To identify the differences between clinical features and outcomes after endovascular therapy for penetrating aortic ulcer (PAU) and intramural hematoma (IMH).

METHODS

From January 2009 to March 2020, patients who underwent endovascular therapy for PAU and IMH were enrolled. Information on patient demographics, presentation, PAU and IMH morphology, laboratory examination, and clinical follow-up information was collected and analyzed. Univariate analysis was performed to identify the differences between IMH and PAU, and Kaplan-Meier was used to calculate the cumulative survival rate and freedom from reintervention.

RESULTS

A total of 114 patients were enrolled; 80 (70.2%) of them were diagnosed with PAU. Compared with PAU, patients with IMH were younger (p = 0.006), more likely to be admitted emergently (p = 0.001), had longer hospital stay (p = 0.028), and had higher levels of C-reactive protein (p = 0.030). Meanwhile, patients with IMH were more likely to be associated with hypertension (p = 0.020) and pleural effusion (p < 0.001) and less likely to have a history of acute coronary syndrome (p = 0.019) and prior cardiovascular intervention (p = 0.017). The five-year freedom from reintervention and cumulative survival rate were 94.2% (95% confidential interval, 88.9%-99.9%) and 87.8% (95% confidential interval, 79.5%-96.9%) in PAU patients and 89.6% (95% confidential interval, 75.8%-99.9%) and 85.1% (95% confidential interval, 68.0%-99.9%) in IMH patients, respectively. There was no significant difference in freedom from reintervention (p = 0.795) or cumulative survival rate (p = 0.817).

CONCLUSIONS

IMH appeared to occur in younger patients with hypertension and usually had an acute onset, while PAU was more likely to be found incidentally in older patients with atherosclerosis. Endovascular therapy was effective in both IMH and PAU patients with encouraging outcomes.

Management of acute type B aortic dissection

BACKGROUND

The best management of acute uncomplicated type B aortic dissection is currently a controversial area. Recent advances in endovascular intervention have begun to establish pre-emptive thoracic endovascular aortic repair as a potential strategy. A review about the management for type B aortic dissection has been conducted.

METHODS

A narrative review consisting of 157 original articles, meta-analyses and guidelines was conducted. The findings were synthesized and summarized using 70 articles.

RESULTS

There are clear guidelines directing surgical management of acute complicated type B aortic dissection. However, the best management of acute uncomplicated disease is more ambiguous, which is especially concerning in a condition which is associated with significant morbidity and mortality. Medical management alone is generally favoured. Endovascular intervention is now being considered by some surgeons, but it can be technically difficult, while exposing the patient to potential surgical risks.

CONCLUSIONS

Clinical and anatomical risk factors have been identified to help vascular surgeons make decisions about treatment in acute uncomplicated type B aortic dissection. New endovascular strategies are being developed to reduce surgical risk and address technical challenges. Registry data should be used to support future best management.

Early and Long-term Results of ePTFE (Gore TAG®) versus Dacron (Relay Plus® Bolton) Grafts in Thoracic Endovascular Aneurysm Repair

BACKGROUND

The aim of this study is to compare early and late results of an expanded polytetrafluoroethylene (ePTFE-Gore TAG®, group A) mesh structured endograft versus a Dacron one (Relay Plus® Bolton, group B) in thoracic endovascular aneurysm repair (TEVAR).

METHODS

A prospective database was used to extract information from anonymous patients who underwent TEVAR for descending thoracic aortic aneurysms (DTAAs) between February 2005 and February 2019 at 3 referral university hospitals. Cases treated by means of ePTFE endograft (Gore TAG, group A) and Dacron graft (Relay Plus Bolton, group B) in elective and urgent settings were included. Early and late outcomes were compared.

RESULTS

A total of 129 consecutive patients were included (115 men and 14 women). ePTFE-Gore TAG® and Dacron-Relay Plus® Bolton were used in 56 (43.4%) and 73 (56.5%) patients, respectively. Preoperative characteristics of patients were similar. Technical success was 100%. Urgent procedures were 22.4%. Mean aortic coverage and partial debranching were 217.5 ± 91.3 and 37.2%, respectively. Early mortality and spinal cord ischemia (SCI) were 8.5% and 2.3%, respectively, without differences between the 2 groups. Early reintervention was required in 5.4% (group A) and 11% (group B), P = 0.29. Median follow-up was 32 months (interquartile range 12-55 months, range 1-156 months), similar between the 2 groups. Type I endoleak (EL), type II EL, and type III EL were observed in 16.3%, 10.9%, and 3.1% of cases, respectively, without significant differences between the groups. The rate of sac shrinkage was 28.6% in group A vs. 39.7% in group B (P = 0.19). Freedom from reintervention in group A versus group B at 6, 12, 24, and 36 months was 94.0% vs. 97.1%, 94.0% vs. 95.5%, 90.8% vs. 86.9%, and 81.1% vs. 80.4%, respectively (log-rank 0.35, Breslow 0.54). Rate of survival at 6, 12, 24, and 36 months was 96.0% vs. 94.2%, 89.3% vs. 86.8%, 76.5% vs. 77.5%, and 63.3% vs. 64.2%, respectively (log-rank 0.30, Breslow 0.57).

CONCLUSIONS

ePTFE-Gore TAG and Dacron-Relay Plus Bolton in DTAA presented similar early and late results in terms of mortality, SCI, EL, and TEVAR-related reinterventions. Effectiveness of TEVAR procedure was confirmed by the high rate of sac shrinkage and it was not influenced by endograft fabric.

A 10-year study of surgical results of descending aorta aneurysm repair following chronic aortic dissection

BACKGROUND

Patients presenting with descending aortic aneurysms developing after aortic dissection often undergo continued aortic expansion which may require operative interventions to address the risk of aortic rupture. In light of the current advances in various treatment options, including endovascular approaches, we analyzed our experience with open surgical repair (OSR) of aneurysms of the descending aorta following aortic dissection.

METHODS

Patients who underwent open repair for aneurysmal changes of the descending aorta after chronic dissection were retrospectively studied. The 30-day operative mortality rate, midterm survival, and major complications were analyzed. Patients were divided into two categories; primary chronic type B aortic dissection and remnant repaired type A aortic dissection (RTAAD).

RESULTS

There were 149 patients with enlargement of the descending thoracic aorta developing after aortic dissection. Of these, 49 patients had medical management, while the remaining 100 patients received OSR. These patients were included in the present analysis. The 30-day mortality and permanent paraplegia rates were 9% and 4%, respectively. The 1-, 3-, and 5-year survival rates were 83%, 80.9%, and 76.1%, respectively. The 1- and 5-year survival rates between the primary chronic type B aortic dissection and remnant RTAAD groups showed no significant between-group differences at 86.7% and 84.3%, and 80% and 71.3%, respectively (P = .289). The overall outcomes of other complications such as renal injury, bleeding reoperation, and extracorporeal membrane oxygenation support showed no significant between-group differences, including an insignificantly higher neurologic complication rate in the remnant RTAAD group. The survival rate in patients with Marfan syndrome was significantly higher than in the patients without Marfan syndrome (P = .033).

CONCLUSIONS

OSR for descending aortic aneurysms developing after chronic aortic dissection showed good early and mid- to long-term outcomes, with acceptably low complication rates. OSR for descending aortic aneurysm after chronic aortic dissection associated with Marfan syndrome also showed good early and mid- to long-term outcomes.

Overall survival and factors predicting long-term outcome after thoracic aortic endovascular repair

PURPOSES

To assess overall survival and to determine factors predicting outcome after thoracic endovascular aortic repair.

MATERIALS AND METHODS

A Retrospective analysis was performed on a cohort of 212 consecutive patients (165 men and 47 women; mean age 64 years) who underwent thoracic endovascular aortic repair in a tertiary referral center for aortic disease. Main indications were true thoracic aortic aneurysm (n = 58; 27.6%), traumatic aortic rupture (n = 33; 15.7%), anastomotic pseudoaneurysms (n = 23; 10.9%), chronic type B aortic dissection (n = 22; 10.5%), and symptomatic, acute type B dissection (n = 21; 10.0%). In 79 patients (37.3%), a hybrid procedure, including supra-aortic rerouting, was performed. Kaplan-Meier estimates were used for overall survival and Cox regression models were used for univariable analysis of the association between risk factors and survival.

RESULTS

Proximal landing zones were predominantly zone 3 (n = 66; 31.3%), zone 2 (n = 63; 29.9%), and zone 1 (n = 38; 18%). In-hospital mortality was n = 18 (8.5%). Overall survival was 79.6%, 65.9%, and 51.1% at 2, 5, and 10 years, respectively; better overall survival was shown for traumatic aortic rupture, anastomotic pseudoaneurysms, and chronic posttraumatic pseudoaneurysms (p < 0.05). Clinical risk factors influencing overall survival include prior coronary bypass surgery, atrial flutter, arterial hypertension, renal failure, chronic obstructive pulmonary disease, and associated abdominal aortic aneurysm (p < 0.05).

CONCLUSIONS

Thoracic endovascular aortic repair is an effective treatment option for various thoracic aortic diseases with highest survival rates for traumatic aortic rupture and anastomotic pseudoaneurysms. Several clinical parameters are identified as risk factors for overall survival.

[Rupture of the descending thoracic aorta following sudden traumatic deceleration injury]

La rupture aigue post traumatique de l’aorte thoracique constitue la seconde cause de mortalité chez les accidentés de la route; 80% des patients décèdent sur les lieux de l’accident. L’atteinte de sa portion descendante en dehors de l’isthme est rare et évaluée à moins de 3%. Nous rapportons le cas d’un homme de 60 ans, victime d’un accident de la voie publique (AVP) dont le mécanisme était un motocycliste heurté par une voiture avec points d’impacts au niveau du membre supérieur droit et thoracique. Cet AVP a occasionné une fracture des deux os de l’avant bras et une rupture de l’aorte thoracique descendante (ATD). Le traitement a consisté en premier temps à une suture de la brèche aortique complétée par la mise en place d’une prothèse synthétique circonférentielle avec anastomose aorto-aortique et en 2^ème temps à la mise en place d’une plaque vissée de l’avant bras. L’évolution était bonne et le malade fut transféré au Service de Chirurgie Vasculaire.

[Treatment of a patient with Crawford type III thoracoabdominal aortic aneurysm]

Presented herein is a clinical case report regarding hybrid techniques successfully used in a patient suffering from a Crawford type III thoracoabdominal aortic aneurysm and DeBakey type IIIB aortic dissection. The first stage consisted in endoprosthetic reconstruction of the descending portion of the thoracic aorta, with the second stage including visceral debranching with endoprosthetic reconstruction of the thoracoabdominal portion of the aorta. As the final stage, the patient was subjected to debranching of brachiocephalic arteries, followed by endoprosthetic repair of the aortic arch. The chosen approach made it possible to avoid the use of extracorporeal circulation, aortic occlusion, and, consequently, prolonged postoperative recovery.

Endovascular Repair of Thoracic Aortic Disease: Early and Midterm Experience

Thoracic aorta disease remains a challenging problem, and despite improvements, open repair techniques are still associated with significant morbidity and mortality. This is a retrospective review of 53 consecutive patients with thoracic aortic pathology who were treated with endovascular repair between September 1998 and December 2004 at a tertiary-care hospital. Endovascular stent graft placement was performed on 23 elective and 30 emergent patients (34 male patients, mean age 66 years, 21 to 85 years). Completion angiography revealed no endoleak in 47 (89%) patients, a type I endoleak in 4 patients, and a type II endoleak in 2 patients. Operative 30-day mortality for elective aneurysms (n = 22), emergent aneurysms (n = 10), dissection (n = 3), penetrating aortic ulcers (n = 7), and trauma (n = 11) was 0%, 40%, 0%, 29%, and 9%, respectively. In total, 46 (87%) patients survived 30 days, and 36 (78.3%) of the survivors were discharged home free of complications. Two patients (4%) experienced paraplegia. Median follow-up was 22 months (1 to 72 months). Intermediate-term results revealed 41 (89%) patients free of endoleak, stent migration, or aneurysmal expansion. Two (4%) patients required reintervention with an additional stent graft. There were 2 (4%) patients with late aortic-related deaths and four (9%) patients with non—aorticrelated late deaths. Endovascular stent graft placement for thoracic aorta disease can be performed successfully and safely with good perioperative and intermediate-term outcomes. Stent graft complication and reintervention rates are low, whereas intermediate survival rates are good. Long-term efficacy still needs to be evaluated.

[Acute post-trauma dissection of the descending thoracic aorta]

BACKGROUND

Traumatic injury to the descending thoracic aorta other than the isthmus is rare, and little known. Acute post-trauma rupture may occur in a context of multiple or rarely unique localizations.

CASE REPORT

We report the case of a young man who was the victim of multiple injuries with an isolated rupture of the descending thoracic aorta. Early diagnosis and adapted endovascular treatment led to favorable outcome.

CONCLUSION

In 90% of cases, acute post-trauma rupture of the aorta in a single localization involve the isthmus. Rupture of the descending aorta is more exceptional but must not be missed. The pathophysiological mechanism and appropriate management are discussed in light of a review of the literature.

Mid-Term Results of Using the Seal Thoracic Stent Graft in Cases of Aortopathy: A Single-Institution Experience

Background

The endovascular approach to aortic disease treatment has been increasingly utilized in the past 2 decades. This study aimed to determine the long-term results of using the Seal thoracic stent graft.

Methods

We retrospectively reviewed the outcomes of patients who underwent thoracic endovascular aortic repair or a hybrid procedure using the Seal thoracic stent graft (S&G Biotech, Seongnam, Korea) from January 2008 to July 2018 at a single institution. We investigated in-hospital mortality and the incidence of postoperative complications. We also investigated the mid-term survival rate and incidence of aorta-related complications.

Results

Among 72 patients with stent grafts, 15 patients underwent the hybrid procedure and 21 underwent emergency surgery. The mean follow-up period was 37.86±30.73 months (range, 0–124 months). Five patients (6.9%) died within 30 days. Two patients developed cerebrovascular accidents. Spinal cord injury occurred in 2 patients. Postoperative renal failure, postoperative extracorporeal membrane oxygenation support, and pneumonia were reported in 3, 1, and 6 patients, respectively. Stent-related aortic complications were observed in 5 patients (6.8%). The 1- and 5-year survival and freedom from stent-induced aortic event rates were 81.5% and 58.7%, and 97.0% and 89.1%, respectively.

Conclusion

The use of the Seal thoracic stent graft yielded good mid-term results. Further studies are needed to examine the long-term outcomes of this device.

Management of retrograde type A IMH with acute arch tear/type B dissection

The incidence of intramural hematomas (IMH) in acute dissection (AD) patients varies between 6% and 30% in the literature, most frequently involving only the descending aorta (58%) than the arch or ascending aorta (42%). In this setting, IMH that initiate in the descending aorta, but extend into the arch or ascending aorta have been described, and referred to as a retrograde type A IMH. In these patients the risk of neurological or cardiac complications are high, and therefore an open surgical or hybrid approach has been proposed as the most appropriate. Nevertheless, the endovascular management of such lesions in surgically unfit patients for open surgery have been offered with acceptable outcomes, although the risk of landing in an unsuitable proximal landing zone is evident. In conclusion, retro-TAIMH is an acute aortic syndrome and should be managed as such. The recommended treatment strategy is open surgery for treating ascending or arch involvement, and TEVAR/medical, based on a complication-specific approach, for those with only descending localization. In those patients in whom retro-TAIMH is associated with an acute B dissection presenting with a proximal entry tear located into the descending aorta, a TEVAR represents an option treatment.

Clinical Outcomes of the Seal® Thoracic Stent Graft for Traumatic Aortic Injury in a Korean Multicenter Retrospective Study

BACKGROUND

Thoracic endovascular aneurysm repair (TEVAR) has been used as a primary treatment for blunt traumatic aortic injury (TAI). However, the outcomes of midterm surveillance of Seal® stent-graft durability for TAI have not been extensively studied. Thus, we aimed to report the midterm outcomes of TEVAR using the Seal® stent graft for blunt TAI.

METHODS

Patients with blunt TAI treated with TEVAR using the Seal® thoracic stent graft between 2007 and 2013 in Korea were included. Midterm outcomes included technical/clinical success, in-hospital death, aorta/procedure/device-related adverse events, secondary procedures, and 30-day and all-cause mortality.

RESULTS

A total of 99 patients (54% men; mean age, 48 years) were included. Grade III or higher injuries were present in 95% of patients, including 15 free ruptures of the thoracic aorta, and 64% of injuries were located in zone III. The median procedure and hospitalization duration were 90 min and 11 days, respectively. The technical success rate was 98%. The number of in-hospital mortalities (n = 8) and stroke (n = 2) were observed at 30 days. Late stroke and paraplegia (>30 days) were not observed during the mean 49 ± 26 months of follow-up (median, 48 months; range, 0-117 months). There were no aorta-related mortalities or conversions to open repair. Secondary procedures were performed in 8 patients, all of which were carotid-subclavian bypasses for delayed left subclavian occlusion. The all-cause mortality rate was 5% at 30 days and 8% at 1 year. The survival rate was 95% at 30 days, 92% at 1 year, 92% at 3 years, and 89% at 5 years. One type Ia endoleak occurred at 18 months after the procedure.

CONCLUSIONS

TEVAR with the Seal® stent graft for TAI showed favorable midterm outcomes. The incidence of major adverse events after the procedure was low.

Consistency of Proximal-to-Distal Tapering of Descending Thoracic Aortic Diameter: Quantification Using a Novel Computer Tomography-based Assessment

BACKGROUND

Successful endovascular repair of thoracic aorta for type B aortic dissection requires correct stent-graft sizing, particularly of distal landing zone which is mainly based on operator experience. The present study aimed to quantitatively define proximal-to-distal tapering of descending thoracic aortic diameter and its consistency.

METHODS

The novel parameter HDP (Hundred times Distance accounts for Percentage)-measured as distance from the distal end of the left subclavian artery to each level along the aortic central line/length from the distal end of the left subclavian artery to the proximal end of the celiac artery along the aortic central line × 100-was calculated per 1% unit of descending thoracic aorta based on 3-mensio software-derived measurements from 281 consecutive individuals who had undergone enhanced chest computer tomography scanning. Association between HDP and maximal diameter of descending thoracic aorta was assessed by using the generalized additive mixed model with smoothing function and threshold saturation effect analyses with generalized estimating equations. Nonadjusted and adjusted models were performed to illuminate its consistency.

RESULTS

Three inflection levels (HDPs of 15.01, 36.63, and 77.74) were identified which allowed to divide the descending thoracic aorta into 4 segments. The taper was consistent before and after adjusting for age, sex, height, body mass index, hypertension, smoking habits, hyperlipidemia, and diabetes. Although 1% unit of descending thoracic aorta decreases, the maximal diameter reduces to 0.007 mm (-0.025, 0.010; P = 0.414) in the segment with HDP <15.01, to 0.151 mm (-0.158, -0.145; P < 0.001) in the segment with 15.01 ≤ HDP < 36.63, to 0.038 mm (-0.040, -0.036; P < 0.001) in the segment with 36.63 < HDP ≤ 77.74; and to 0.026 mm (-0.049, -0.002; P = 0.035) in the segment with HDP > 77.74, respectively.

CONCLUSIONS

The maximal diameter of descending thoracic aorta decreases gradually and consistently among individuals free of aortic diseases.

Risk of spinal cord ischemia after thoracic endovascular aortic repair

Background

Spinal cord ischemia (SCI) is a recognized grave complication after thoracic endovascular aortic repair (TEVAR). The present study aimed to evaluate the incidence and investigate risk of SCI after TEVAR based on current prophylactic strategies designed against established risk factors.

Methods

The study retrospectively reviewed a prospectively maintained database to investigate patients who underwent TEVAR successfully between January 2009 and December 2012 in a single cardiovascular center. Detailed assessment of SCI risk was routinely performed for all patients before TEVAR was carried out. Prophylactic measures, including left subclavian artery (LSA) revascularization, blood pressure augmentation and cerebrospinal fluid (CSF) pressure control after TEVAR, were employed in high-risk patients and physical neurological examinations were regularly done to evaluate SCI after TEVAR. Patients were further divided into SCI group and non-SCI group.

Results

A total of 650 patients were enrolled in the study. Eleven patients (1.69%) developed SCI after TEVAR. Baseline level of hemoglobin was significantly lower in the SCI group (113.00 vs. 128.50, P=0.023). More patients in the SCI patients in the SCI group underwent TEVAR under general anesthesia (45.5% vs. 17.7%, P=0.033). A significantly higher incidence of post TEVAR hypotension was found in the SCI group (2.7% vs. 27.3%, P=0.004). Logistic regression analysis revealed that post-TEVAR hypotension (OR, 8.379; 95% CI, 1.833-38.304; P=0.006) was strongly associated with development of SCI and high normal baseline hemoglobin was a protective factor (OR, 0.969; CI, 0.942-0.998; P=0.037). The mortality in hospital and mortality at 1 year were not significant different between the SCI and the non-SCI group (0% vs. 1.6% P=1.000; 9.1% vs. 3.0%, P=0.294, respectively). While length of post-TEVAR stay (13.00 vs. 7.00 days, P=0.000) and length of hospital stay (20.00 vs. 13.00 days, P=0.001) were significantly greater in the SCI group.

Conclusions

Our study revealed that, based on current prophylactic measures to curtail SCI, including LSA revascularization, blood pressure augmentation and CSF pressure control after TEVAR, post-TEVAR hypotension remains a major and independent risk factor for SCI and high normal baseline hemoglobin level is protective. SCI results in longer post-TEVAR stay and hospital stay, but not associated with increased mortality. Robust precautions should be taken against underlying causes for post-TEVAR hypotension and low level of hemoglobin should be avoided.

Revised Endografting for a Giant Descending Thoracic Aorta Aneurysm due to Synchronous Type III/Ib Endoleak, Causing Dysphagia

BACKGROUND

Although surgical resection and graft replacement therapy for thoracic aortic aneurysms has advanced greatly over the last 20 years, significant perioperative morbidity and mortality still occur, particularly in patients considered high risk due to significant coexisting medical illness or previous operations performed for the treatment of intrathoracic disease.

METHODS

The case described is that of a patient with a giant (13.8 cm) symptomatic descending thoracic aorta aneurysm (DTAA), previously treated endovascularly 15 years ago. The expanding aneurysm was due to undiagnosed synchronous type III/Ib endoleak resulting in chronic malnutrition and eventually dysphagia and dyspnea due to compressive symptoms of the esophagus. Besides the risk of rupture, dyspnea and dysphagia with progressive weight loss were significant indications necessitating repair. Regarding his major comorbidities, the patient was identified as high risk for open surgical repair, therefore an endovascular option was offered. Two valiant tube endografts were inserted and deployed successfully without complications.

RESULTS

Postoperatively, upper gastrointestinal endoscopy imaging that was performed to the patient revealed marked persistent stenosis of the esophagus despite aneurysm pressure relief. However, at the multidisciplinary team meeting, an esophageal stenting was ruled out due to the risk of stent fracture and esophageal perforation with its devastating complications. Therefore, a conservative management was deemed appropriate for the patient taking into consideration the risks of prolonged hospitalization and malnourishment coupled with an unpredictable clinical course regarding the remission of the symptoms. Despite the slight gradual clinical improvement in the immediate postoperative period, the patient passed away at the 40th postoperative day due to hospital acquired pneumonia.

CONCLUSIONS

Following endovascular repair of giant DTAA compressing the esophagus, significant symptomatic improvement should not be always expected due to the large residual thrombotic aneurysm sac. Although compression symptoms can be managed conservatively in patients deemed at high risk for esophageal perforation, postoperative course and management is of paramount importance and should be treated on an individual basis.

Early and midterm outcomes of endovascular treatment for chronic aneurysmal aortic dissection: a retrospective study

BACKGROUND

The aim of this study was to evaluate endovascular treatment for enlarged Stanford type B chronic aneurysmal aortic dissection (CAAD). The conventional treatment for CAAD is open repair; however, the operative mortality is high in extensive prosthetic graft replacements.

METHODS

A retrospective single-center study was conducted on 74 consecutive patients who underwent endovascular treatment for CAAD in the past 8.5 years. In the partial exclusion (PE) group, entry sites in close proximity to the maximum diameter of CAAD were closed using a stent graft and reentry sites were left without closure. In the complete exclusion (CE) group, we attempted to close all entry and reentry sites.

RESULTS

A total of 43 patients (PE group) and 31 patients (CE group) were included with mean ages of 59 and 63 years, respectively. Operative mortalities of 2.3% and 0% were observed in the PE and CE groups, respectively. Complete tear closure was successful in 17 of 31 patients (54.8%) in the CE group. In the PE group, complete thrombosis of the false lumen was achieved in only one case (2.3%). Freedom rates from reentry closure were 90.2%, 86.9%, and 78.2% at 1, 3, and 5 years, respectively. The diameter of the true lumen/aorta changed from 16.9/62.9 mm to 30.2/53.6 mm and from 13.7/55.1 mm to 25.8/51.0 mm in the aortic arch and descending thoracic aorta, respectively. The freedom rates from secondary intervention in successful and unsuccessful CE cases were 92.9% and 69.1%, respectively, at 1 year and 92.9% and 53.7%, respectively, at 3 years.

CONCLUSION

Endovascular treatment for CAAD had favorable early and midterm outcomes.

National Trends of Thoracic Endovascular Aortic Repair Versus Open Repair in Blunt Thoracic Aortic Injury

BACKGROUND

Blunt thoracic aortic injury (BTAI) occurs in <1% of all trauma admissions. Considering the advent of multiple thoracic endovascular aortic repair (TEVAR) devices over the past decade, improved outcomes of TEVAR supported in the literature, rapid diagnosis, and improved preoperative planning of BTAI using computed tomography imaging, we hypothesized that the national incidence of TEVAR in BTAI has increased while open repair has decreased. In addition, we hypothesized that the mortality risk in BTAI patients undergoing TEVAR would be lower than open repair.

METHODS

This was a retrospective analysis of the National Trauma Data Bank from 2007 to 2015. The primary end points of interest included the incidence of TEVAR and open repair, as well as mortality in BTAI patients undergoing intervention. Covariates were included in a multivariable analysis to determine risk for mortality in BTAI patients undergoing open repair versus TEVAR.

RESULTS

We identified 3,628 BTAI patients undergoing intervention. Of these, 3,226 underwent TEVAR (87.9%), and 445 (12.1%) underwent open repair. Compared with open repair, TEVAR had a shorter mean length of stay (LOS) (19.8 vs. 21.3 days, P < 0.05) and lower rates of acute kidney injury (AKI) (5.6% vs. 9.0%, P < 0.05) and mortality (8.8% vs. 12.8%, P < 0.05). Open repair had greater risk for mortality than TEVAR (odds ratio = 1.63, confidence intervals = 1.19-2.23, P < 0.05).

CONCLUSIONS

The rate of open repair decreased from 7.4% in 2007 to 1.9% in 2015, whereas TEVAR increased from 12.1 to 25.7% during the same time period. We confirmed previous findings that endovascular repair is associated with decreased mortality, LOS, and major complications, including AKI. Future investigations should focus on identifying the ideal patient candidate for TEVAR and elucidate precise indications for TEVAR in BTAI.

Comparison of open surgical versus hybrid endovascular repair for descending thoracic aortic aneurysms with distal arch involvement

Background

Our aim was to compare the efficacies of conventional open thoracotomy and hybrid endovascular technique in patients with descending thoracic aortic aneurysms involving the distal arch.

Methods

Between January 2005 and December 2015, 125 consecutive patients with descending aneurysms involving distal arch underwent open repair via thoracotomy (n=79) or zone 1/2 hybrid endovascular repair (n=46). Surgeries entailing total arch replacement by elephant trunk technique (with sternotomy) and Zone 0 hybrid arch repairs were excluded. Early and late outcomes were compared using propensity scores and inverse-probability-of-treatment weighting (IPTW).

Results

In-hospital mortality rates for open repair (10.1%) and hybrid repair (6.5%) did not differ significantly (P=0.49). Major adverse outcomes included stroke (11.4% vs. 8.7%), paraplegia (2.5% vs. 0.0%) and lung complications (19.0% vs. 6.5%). Once adjusted by IPTW, hospital mortality risk for conventional open repair (OR =4.396; P=0.086) tended to be higher, and there was significant risk of lung complications (OR =4.372; P=0.025). However, both techniques were similar in terms of 30-day mortality (OR =2.745; P=0.257), stroke (OR =2.134; P=0.217), paraplegia (OR =3.639; P=0.407), and midterm survival (OR =1.05; P=0.90). Freedom from reintervention at 10 years was significantly better for open repair (85.2%±7.1%) compared with the hybrid approach (46.3%±11.0%; OR =0.13; P<0.01).

Conclusions

Hybrid arch repair conferred a significantly lower incidence of pulmonary complications, without benefitting perioperative mortality and stroke. However, open repair proved more reliable, showing greater durability. Long-term investigations are needed to confirm the viability and safety of hybrid repair as an alternative treatment in this setting.

Geometric Deformations of the Thoracic Aorta and Supra-Aortic Arch Branch Vessels Following Thoracic Endovascular Aortic Repair

Objective:

To utilize 3-D modeling techniques to better characterize geometric deformations of the supra-aortic arch branch vessels and descending thoracic aorta after thoracic endovascular aortic repair.

Methods:

Eighteen patients underwent endovascular repair of either type B aortic dissection (n = 10) or thoracic aortic aneurysm (n = 8). Computed tomography angiography was obtained pre- and postprocedure, and 3-D geometric models of the aorta and supra-aortic branch vessels were constructed. Branch angle of the supra-aortic branch vessels and curvature metrics of the ascending aorta, aortic arch, and stented thoracic aortic lumen were calculated both at pre- and postintervention.

Results:

The left common carotid artery branch angle was lower than the left subclavian artery angles preintervention ( P < .005) and lower than both the left subclavian and brachiocephalic branch angles postintervention ( P < .05). From pre- to postoperative, no significant change in branch angle was found in any of the great vessels. Maximum curvature change of the stented lumen from pre- to postprocedure was greater than those of the ascending aorta and aortic arch ( P < .05).

Conclusion:

Thoracic endovascular aortic repair results in relative straightening of the stented aortic region and also accentuates the native curvature of the ascending aorta when the endograft has a more proximal landing zone. Supra-aortic branch vessel angulation remains relatively static when proximal landing zones are distal to the left common carotid artery.

Long-term results of endovascular repair for descending thoracic aortic aneurysms

OBJECTIVE

Since thoracic endovascular aortic repair (TEVAR) received U.S. Food and Drug Administration approval for the treatment of descending thoracic aneurysms in March 2005, excellent 30-day and midterm outcomes have been described. However, data on long-term outcomes are lacking with Medicare data suggesting that TEVAR has worse late survival compared with open descending repair. As such, the purpose of this study was to examine the long-term outcomes for on-label use of TEVAR for repair of descending thoracic aneurysms.

METHODS

Of 579 patients undergoing TEVAR between March 2005 and April 2016 at a single referral center for aortic surgery, 192 (33.2%) were performed for a descending thoracic aneurysm indication in accordance with the device instructions for use, including 106 fusiform (55.2%), 80 saccular (41.7%), and 6 with both saccular and fusiform (3.1%) aneurysms. All aneurysms were located distal to the left subclavian artery and proximal to the celiac axis, and hybrid procedures including arch or visceral debranching were excluded with the exception of left carotid-subclavian artery bypass. Aortic dissection and intramural hematoma as indications for TEVAR were also excluded. Primary 30-day and in-hospital outcomes included mortality, stroke, need for new permanent dialysis, and permanent paraparesis or paraplegia. Primary long-term outcomes included survival and rate of reintervention secondary to endoleak. The Kaplan-Meier method was used to estimate long-term overall and aorta-specific survivals.

RESULTS

The mean age was 71.1 ± 10.4 years. All aneurysms in this series were degenerative in nature and no patients with a connective tissue disorder were included. The mean aortic diameter was 5.9 ± 1.5 cm at time of intervention. Rates of 30-day and in-hospital mortality, stroke, permanent dialysis, and permanent paraparesis and paraplegia were 4.7%, 2.1%, 0.5%, and 0.5%, respectively. At a mean follow-up of 69 ± 44 months (range, 3-141 months), there were 68 late deaths (35.4%), two of which were due to aortic rupture. Overall and aorta-specific survivals at 141 months (11.8 years) were 45.7% and 96.2%, respectively. Endovascular reintervention was required in 14 patients (7.3%) owing to type I (n = 10), type II (n = 2), and type III (n = 2) endoleak, all of which subsequently resolved. No patient required open reintervention for any cause.

CONCLUSIONS

Long-term (12-year) aorta-specific survival after on-label endovascular repair of degenerative descending thoracic aneurysms in nonsyndromic patients is excellent (96%) with sustained protection from rupture, and a low rate of reintervention owing to endoleak (7%). Endovascular repair should be considered the treatment of choice for this pathology.

Contemporary strategies for repair of complex thoracoabdominal aortic aneurysms: real-world experiences and multilayer stents as an alternative

Thoracoabdominal aortic aneurysms (TAAA) present special challenges for repair due to their extent, their distinctive pathology, and the fact that they typically cross the ostia of one or more visceral branch vessels. Historically, the established treatment for TAAA was open surgical repair, with the first procedure reported in 1955. Endovascular repair of TAAA with fenestrated and/ or branched endografts, has been studied since the beginning of the current century as a means of mechanical aneurysm exclusion. More recently, flow modulator stents have been employed with the aim at reducing shear stress on aortic aneurysmal wall. In this review we present technical and main results of these techniques, based on literature review and personal experience.

Post-traumatic acute thoracic aortic injury (TAI)-a single center experience

Background

We assess the effectiveness and our experience in emergency thoracic endovascular aortic repair (TEVAR) in patients with post-traumatic acute thoracic aortic injury (TAI) and associated multiorgan trauma. TAI is a life-threatening condition. It usually results from a sudden deceleration caused by vehicle accident, a fall or some other misfortune. Techniques of endovascular aortic repair have become promising methods to treat emergent TAI.

Methods

Since 2007, 114 patients with thoracic aorta pathologies have been treated by TEVAR. Our study involved 15 (incl. 14 men) of them (13%) who underwent stent graft implantation for post-traumatic either aortic rupture or pseudoaneurysm. The procedural access was limited to small skin incision in one groin and percutaneous puncture of the contralateral femoral artery. We evaluated technical success, early and long-term mortality, complication rate of procedure and throughout clinical and instrumental follow-up.

Results

Technical success rate was 100%. All patients survived the endovascular interventions. No additional procedures or conversions to open surgery were necessary. After the operation, none of the patients had symptoms of stroke or spinal cord ischemia (SCI). No serious stent-graft-related adverse events such as endoleak, infection or migration were noted during follow-up period that ranged from 6 to 108 months.

Conclusions

In our department, techniques of TEVAR with stentgraft implantation have become methods of choice in treatment of traumatic TAIs since they have enabled to minimize operational risk, particularly in unstable multitrauma patients in severe clinical status. TEVAR for TAI performed in emergency settings provide favorable long-term results.

Dissecção aórtica de tipo B de Stanford: relato de caso e revisão de literatura

O complexo tratamento de dissecção da aorta ainda apresenta controvérsias devido à gravidade do caso e à necessidade de individualização da terapêutica. A gravidade relaciona-se ao difícil diagnóstico pelas queixas inespecíficas e pelas graves complicações inerentes à evolução da doença (ruptura aórtica, síndrome de má perfusão, dissecção retrógrada, dor ou hipertensão refratária). Este relato apresenta um homem de 61 anos, tabagista e hipertenso mal controlado, que evoluiu para dissecção aórtica de tipo B de Stanford. Foi abordado através de técnica endovascular com uso de endoprótese com stent para tratamento do caso após falha do tratamento medicamentoso. O tratamento endovascular mostrou-se uma ferramenta eficaz para o tratamento definitivo, com boa taxa de sobrevida ao final do primeiro ano após o procedimento.